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初三英语语法知识点

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掌握好语法知识,是学好英语的重要环节。下面是本站小编收集整理初三英语语法知识点以供大家学习!

初三英语语法知识点

初三英语语法知识点:连词的定义

连词是一种虚词,不能担任一个句子成分。连词在句中主要起连接词与词、短语与短语及句子和句子的作用。它主要是包括并列连词和从属连词。

并列连词的用法:

1.并列连词and和or:

①and 和or 是用得最多的并列连词,可以连接:

a.两个并列的动词: We were singing and dancing all evening. 整个晚上我们都在唱歌跳舞。

b.名词、形容词等:This apple is big and red. Would you like fish or beef?

c.两个并列的分句(句子):I said it and I meant it. 我说话算数。

②and 可连接两个分句,表示递进关系。Give him an inch and he will take a mile. 他会得寸进尺。

③or可连接分句,表示"否则":

Don't drive so fast or you'll have an accident. 别开这么快,不然你会出车祸。

2.表示意思转折的连词:but, yet:

①but和yet的用法:

The weather will be sunny but cold. 天气会晴朗但很冷。

It is strange, yet true. 这很奇怪,却是真的。

②however, still 等为副词,但可起连接作用,表示意思的转折——“但是”或“然而”。

ver: His first response was to say no. Later, however, he changed his mind.

他的第一反应是不行,但后来他改变了主意。

l: It's raining; still I'd like to go. 天在下雨,但我还是要去。

③词组all the same: She is naughty, all the same we have to laugh at her jokes.

她很调皮,但对她的恶作剧我们还是要发笑。

3.表示因果的连词:

①for可以表示“因为”,但引导的不是从句,而是并列分句,对前面情况加以解释,常用逗号把它和前面的分句分开,这在书面语中比较多见。

The days were short, for it was now December. 白天很短,因为现在已经是十二月。

She must have gone out early, for she had not come for breakfast.

她肯定一早出去了,因为她没来吃早饭。

②so 表示结果,可译为“因此”、“所以”。

Our cases were heavy, so we took a taxi. 我们的箱子很重,因此我们坐了出租车

③therefore 为副词,也表示同样的意思——“因此”,可放句前:

He had gone; she therefore gave the money to me.他走了,于是她把钱给了我。

… and的用法

A man should have both courage and perseverance.一个人既要有勇气又要有毅力。

5.就近原则:

1)neither…nor… Neither Lucy nor Lily is a League member.

2)not only…but also… Not only you but also he likes football.

3)either…or… Either Jim or Peter is right.

4)not…but… Not Jim but Peter broke the cup.

well as的用法:

I have read one of his novels as well as a few of his plays. 我读过他的一本小说和几个剧本。

初三英语语法知识点:数词表示方法

(1)年、月、日、时的写法和读法

①表示日期用序数词,前面加定冠词 e.g. 3月8日 March the eighth

②年份一般分为两部分读,先读前两位数,再读后两位数 e.g. 1949 nineteen forty-nine

③以上时间合在一起的写法

e.g.1955年10月1日上午10点 10:00 a.m. October 1st, 1955

(2)分数的表示法

分数由基数词和序数词构成,基数词代表分子,序数词代表分母,除了分子为1的情况,序数词都要用复数形式。带分数中的整数用基数词表示,并用and和分数隔开。

e.g.14 one-fourths 3-25 three and two-fifths

(3)小数、百分数的表示

①小数的表示 e.g. 6.4 six point four 12.409 twelve point four oh nine

②表示百分数用"基数词+percent(per cent)"形式 e.g. 50% fifty per cent